Table 3. The incidence of poor prognosis trismus predicts by cut-off values of masticator structures, time schedual SA score and propensity score.

Cutoff Values from ROC curve results
Data Set	Cutoff Value	Sensitivity (%)	Specificity (%)
Mean Radiation Dose of masticator structures	42.14	63.64	90
Mean Radiation Dose of masticator muscles	42.54	63.64	90
Mean Radiation Dose of LP	42.03	72.73	70
Mean Radiation Dose of PG	27.99	80.95	60
6th month SA score × mean masticator muscle dose	240.6	72.73	90
12th month SA score	5.5	72.73	72.73
Propensity Score*	0.38	100	91

Abbreviation.

LP  =  lateral pterygoid muscle; PG  =  parotid gland; ROC curve  =  receiver operating characteristic curve.

*The propensity score was generated from the above six parameters with logistic regression analysis.